Installing and Configuring Acache_client and Hcache

Installing Acache_client and Hcache Using RPM

1. Obtain the RPM installation package (hcache included) and digital certificate of acache_client from Huawei technical support.

   Table 1 lists the default RPM installation files and paths.

   Table 1 Installation files and paths

   File	Description	Path
   acache_client	Smart prefetch framework	/usr/local/bin/
   bcache.conf	Bcache configuration file	/etc/modprobe.d/
   acache_client.service	Configuration file required for using systemctl to start acache_client	/usr/lib/systemd/system/
   hcache_config.cfg	Hcache configuration file	/usr/local/bin/
   libhcache.so.[version_number]	Hcache library file	/usr/lib64/

2. After obtaining the installation package, verify its integrity and consistency for security purposes.

   Perform the verification:

   1. Obtain the software digital certificate and installation package. For details, see 1.
   2. Obtain the verification tool and method from the following link:
      • For carriers: https://support.huawei.com/carrier/digitalSignatureAction
      • For enterprises: https://support.huawei.com/enterprise/en/tool/pgp-verify-TL1000000054
   3. Verify the software package integrity by following the procedure described in the OpenPGP Signature Verification Guide obtained in 2.
3. Use the root permission to start the installation.
   • If it is the initial installation, run the following command:

     rpm -ivh acache_client-x.x.x_x.x.x-1.el7.aarch64.rpm

   • If it is an upgrade, run the following command:

     rpm -U acache_client-x.x.x_x.x.x-1.el7.aarch64.rpm

   During the installation, if the message "package acache_client... is already installed" is displayed, continue the installation using either of the following methods:

   

   • Run the rpm -e acache_client command to uninstall the RPM package and then run the rpm -ivh command to install it.
   • Run the rpm -ivh acache_client-x.x.x_x.x.x-1.el7.aarch64.rpm -force command.

Configuring Hcache

The smart prefetch algorithm hcache provides the initial configuration file hcache_config.cfg, which is stored in the same directory as acache_client by default, that is, /usr/local/bin. The algorithm reads the file as the initial parameter during the initial loading.

Table 2 describes the configuration items of hcache_config.cfg.

After the modification is complete, restart acache_client. For details, see Stopping the Smart Prefetch Engine and Starting the Smart Prefetch Engine.